參數(shù)資料
型號(hào)： EVAL-ADM2490EEBZ
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 1/16頁(yè)
文件大小： 0K
描述： BOARD EVAL FOR ADM2490
標(biāo)準(zhǔn)包裝： 1
系列： *
High Speed, ESD-Protected, Full-Duplex,
iCoupler Isolated RS-485 Transceiver
ADM2490E
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
2006–2008 Analog Devices, Inc. All rights reserved.
FEATURES
Isolated, full-duplex RS-485/RS-422 transceiver
±8 kV ESD protection on RS-485 input/output pins
16 Mbps data rate
Complies with ANSI TIA/EIA-485-A-1998 and
ISO 8482: 1987(E)
Suitable for 5 V or 3 V operation (VDD1)
High common-mode transient immunity: >25 kV/μs
Receiver has open-circuit, fail-safe design
32 nodes on the bus
Thermal shutdown protection
Safety and regulatory approvals
UL recognition: 5000 V rms isolation voltage
for 1 minute per UL 1577
VDE certificate of conformity
DIN EN 60747-5-2 (VDE 0884-10 Part 2): 2003-01
DIN EN 60950 (VDE 0805): 2001-12; EN 60950: 2000
VIORM = 848 V peak
Operating temperature range: 40°C to +105°C
Wide body, 16-lead SOIC package
APPLICATIONS
Isolated RS-485/RS-422 interfaces
Industrial field networks
INTERBUS
Multipoint data transmission systems
FUNCTIONAL BLOCK DIAGRAM
VDD1
GND1
A
B
VDD2
GND2
GA
LV
A
N
IC
IS
O
L
A
T
ION
Y
Z
TxD
RxD
ADM2490E
05
88
9-
0
01
Figure 1.
GENERAL DESCRIPTION
The ADM2490E is an isolated data transceiver with ±8 kV ESD
protection that is suitable for high speed, full-duplex communi-
cation on multipoint transmission lines. It is designed for balanced
transmission lines and complies with ANSI TIA/EIA-485-A-1998
and ISO 8482: 1987(E). The device employs Analog Devices, Inc.,
iCoupler technology to combine a 2-channel isolator, a three-
state differential line driver, and a differential input receiver into
a single package.
The differential transmitter outputs and receiver inputs feature
electrostatic discharge circuitry that provides protection to ±8 kV
using the human body model (HBM). The logic side of the device
can be powered with either a 5 V or a 3 V supply, whereas the
bus side requires an isolated 5 V supply.
The device has current-limiting and thermal shutdown features
to protect against output short circuits and situations where bus
contention could cause excessive power dissipation.
The ADM2490E is available in a wide body, 16-lead SOIC package
and operates over the 40°C to +105°C temperature range.
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